Automatic air valve for hydropneumatic tanks



Sept. 17, 1929. F. A. scHossow AUTOMATICAIR VALVE FOR HYDROPNEUNATIQ TANKS Filed April 19. 1928 s Sheets-Sheet 1 JQMQJW INVENTOR BY 525. 54.4

ATTORN EY Sept. 17, 1929. F. A. scHossow 1,728,577

AUTOMATIC AIR VALVE FOR HYDROPNEUMATIC TANKS Filed April 19, 1928 5 ShGEts-Sheet 2 INVENTOR BY 6T 6. 575mm ATTORNEY p 9- FfA. SCHOSSOW 1,728,577

AUTOMATIC AIR VALVE FOR HYDROPNEUMATIC TANKS Filed April 19, 1928 3 Sheets-Sheet 3 yZM a. 64 14 7 lNVENTOR BY 52g? $6.444

ATTORNEY Patented Sept. 17, 1929 UNITED STATES I FREDERICK A. SCHOSSOW, 0 F DETROlI'I, MICHIGAN AUTOMATIC AIR [VALVE roe HYnaorNnn Aqirc amas Application filed. April 19,

My invention relates to an automatic air valve for hydropneumatic tanks and its purpose is to introduce a predetermined volume of air along with Water delivered to the tanks in order that the air under compression therein may not be exhausted from the tank through the gradual discharge of water from the latter.

While my valve may be employed in connection with hydro-pneumatic tanks gencrally, it has been especially designed for pressure tanks for the delivery of water for toilet purposes under control of a suitable flushing valve.

With the foregoing and other objects in view which will appear as the description proceeds. the invention further resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes may be made in the precise embodiment of the invention herein disclosed without departing from the spirit of the same.

In the drawings accompanying this specification:

Figure l is a diagrammatic view partly in perspective and partly in section, showing piping leading from a water system not indieated-through the air valve to a closed tank and thence through a flushing valve to a toilet-the air valve being also connected with a drain pipe.

Figure 2 is a vertical cross-sectional view through the valve showing it closed. against the passage of water and air to the compression tank.

Figure 3 is a similar vertical cross-sectional view through the valve showing it open for the delivery of water and air to the tank. I

Figure 4 is a cross-sectional view taken on or about line t4 of Figure 2.

Figure 5 is a cross-sectional view taken on or about line 55 of Figure 2.

Figure 6 is a cross-sectional view taken on or about line 66 of Figure 2.

Referring now to the letters of reference placed upon the drawings:

A. denotes the body of the valve, B

1928. Serial No. 271,361.

indicates a cylindrical 'topcover having an outwardly projecting flange overlapping the wall of the valve body. Cis a collar-screwed upon the valve body having a flange overlapping the flange of the ,cover. D indi- 5 cates a leather diaphragnn secured between the wall of the body and flange ot the top cover provided with a port D i E is the chamber ofan air exit valve from which projects downwardly a screw-threaded neck E integral with the valve seat E within the chamber. F denotes the valve; which normally rests. upon the seat E guided by a plunger or stem projecting through a spider frame'or wall E at the 6 upper end of the valve chamber.

G is spring resting upon a projecting flange of the chamber E and bearing at its upper end against a shoulder formed by the wall of the cover B, secured to the valve body. H denotes an air chamber loosely sleeved within the valve body open to and SC1]'CW(1 to the neck E of the air} exit vave.

To the lower wall ofthe air chamber H 75 is secured a valve washer by a thimble J having a limited vertical movement through a central bore in the partition wall A diyiding the body of the valve into. two chamoers;

J denotes transverse ports in the annular wall of the thimble through which water enters the air chamber by way of the water in let K from the piping L leadingto the source of supplysee Figure 1.

K is a plug valve screwed into a neck I integral with the water inlet K, to control the flow of water through the latter. K is a closure cap for the end of the neck.

M is a drain pipe connection, screwed to a drain pipe Msee Figure 1secured by a collar N to the lower end of the valve body. P denotes the body of both a relief and a drain valve, having a flange l? fitted with agasket extending between the flange of the drain pipe connection and the body of'the valve to which it is secured by the collar N. I f i Q, denotes a drain valve'oi cup-plunger type adapted to close a transverse port Q l-Qll through the wall of the valve body P which is spacedas indicated at P-from the wall of the main valve to provide a passage to the port Q1 opening into the cup-plunger Q when the latter is open. a

Q is a spring lodged within the plunger bearing against the'upper wall of. the, plungor at one end and atv the other end upon a washer Q for1nin a valve seat encirclin a port Q extending downwardly through the valve body. Q is a screw, screwed into the wall of the valve body, the head of which overlaps the valve Qsee Figures 2 and l mounted upona rocking frame Ssee Figure 4,pivotedupon: atransverse bar S supported by posts R R integral with the body.

R5 is a washer mounted in the cup-shaped valve R, and E3 is an adjusting screw in the cup-shaped valve for adjusting the washer. S? is an arm integral with the frame S, which projects into the path of the thimble J extending, downwardly from: the air chamber, which in its. lowermost positionsee Figure: 2+servesto trip the arm S as willbe hereafter explained. S denotesa, spring. bearing against the arm to yiel'dably maintain it in its normally elevated position.

Screwed into the outlet in the top of the coverB is a pipe '1? leading into a T connected-fby a; nipple with. the bottom of ahydiopneumatic tankv U, and T is a pipe leading from the T to a flush valve V controlling the delivery of water'to: the toilet bowl lsee Figured. V Y

Havingindicatedtheseveral parts by ref.- erence letters, the constructionand operation of the deyice willbe readily understood.

For the'purposes of this description it will re'assu-med that it has been installed in connection with a pressuretanlt for" delivery of waterto a toilet bowl-as disclosed in Figure 1 of the drawings. 1

It should be understood that the main valve I and exit valve F are normally closed when no Water'is lowing through the valve, and that the drain valvev Q and relief valve B are normally open.

' The main valve is activated by relieving the water pressure on the upper face of the diaphragm" D either by opening a tap eonnected with the supply: pipe attached to the outlet from the valve, or the supply leading intoa hydro-pneumatic tank, or in any oths er similar manners When: the pressure is relieved as'indicated, the water entering at the inlet K exerts pressure on the lower faceof the diaphragm D and therebyopens the main: valve Lwhich upon raising allows the relief valve R to ber H forcing the air therein out through the exit valve F and thence into the water system leading to the storage or hydro-pneumatic tank;

The valves remain in this position as long as the water continues to flow freely due to the fact that the Jressure is greater on the underside of the diaphragm.

'vi heni the flow of water is terminated or nearly terminated through the closing of a faucet in the supply, or as a result of the gradual filling of a storage tank having air therein, the main valve closes, owing to the pressure on both sides of the diaphragm. D becoming equalized.

The closing of the main valve opens the relief valve R and the water pressure closes the exit valve F, preventing any further water entering the air chamber H, thereby effectually relieving the pressure on: the drain valve Q5 which is now farced open by the spring Q. therein.

The \vater in the air chamber now drains into the lower valve chamber, thence through the drain port Q},through the opening Q and out through the bottom: of valve where a drain pipe N' is connected to carry the water by gravity to any desired point.

The port D in the diaphragm Dis to provide means whereby the pressure on the upper .ai d lower faces of the diaphragm may be equalized after the main valve 1 has automatically closed. e

As the valve becomes operative each time the pressure is relieved, it is obvious that one valve maybe employed to take care of two or more pressure tanks, for example, if the pressure tanks are employed to flush clos t bowls, the. valve may be installed in a main line to which are connected branches leading to two or more tanks, the air will pass to the particular tank leading to a particular bowl, at the time ofealch flush. The same result is attained with air chambers in connection with individual faucets, as theair would be carried to the particular air chamber connected with each faucet, every time any faucet was opened.

Having thus described my invention what I claim is: i

1.. In combination with a water system including means: for intermittently drawing water from the system, a device of the character described, comprising a valve body provided with an inlet and: an outlet port; a combined main valve and air chamber within tihe valve body, adapted to be actuated by the pressure of the water flowing through the valve body, whereby when water is withdrawn from the system through the valve body, the air within said air chamber is automatically injected into the water passing through the valve body.

2. In combination with a water system equipped with means for intermittently drawing water therefrom, a device of-the character described, comprising a valve body provided with an inlet port and an outlet port; an air chamber within the valve body; a valve adapted to normally prevent water from entering the air chamber, and also adapted to be actuated by the pressure of water flowing through the valve body, whereby when water under pressure flows through the valve body, the air within said valve body is automatically injected into the water passing through the valve body.

In combination with a water system in cluding manually operated means i'ror draw ing water from the system, a device of the character described comprising a valve body provided with a partition dividing'the body into upper and lower chambers with a bore and main valve seat in the partition; a coilbined main valve and air chamber within the body adapted to be actuated by the pressure of the water flowing through the valve body, whereby upon withdrawing water from the water system the contents oi. the air chamber automatically pass through the valve body.

4. In a device of the character described, a valve body provided with a partition dividing the body into upper and lower chambers with a central bore and main valve seat in. the partition; a combined air chamber and main valve normally seated in said partition, with a depending neck extending through its central bore into the lower chamber; a diaphragm secured in the valve body; an exit valve; an annular connection between the exit valve and air chamber, extending through the diaphragm; a pressure relief valve; a drain valve; and suitable water inlet, discharge and drainage connections through the wall of the valve body.

5. In a device of the character described, a valve body; a partition wall having a central bore and mainvalve seat dividing the body into upper and lower chambers; a water inlet leading to the upper chamber; a' cylindrical cover mounted on the wall of the upper chamber; a diaphragm secured between the cover and upper chamber; an air exit valve chamber located above the diaphragm having a depending neck projecting through an opening in the diaphragm; a combined air chamber and main valve secured to the depending neck of the air exit valve; a sleeve extending from the lower wall of the combined air chamber and main valve through a bore in the partition wall, said.

sleeve having transverse ports for the passage of fluid into the air chamber; a pressure relief valve in the lower chamber of the raised and to automatically open under the urge ot' the spring when said main valve is closed.

6. The combination of a valve body divided by a partition, having a central bore and a main valve seat, forming an upper and lower chamber; a water inlet leading to the upper chamber; an annular cover mounted on the wall of the upper chamber, tapped at its upper end for a, pipe connection; a diaphragm secured between the walls of the valve body and cover; an air exit valve chamber and valve locatedwithin the cover having a neck projecting downwardly through the diaphragm; a combined air chamber and main valve secured to said neck, normally resting upon the main valve seat in the partition dividing the valve body; an annular neck extending downwardly from the air chamber through a central bore in the partition wall, having transverse ports through its wall; a pressure reliei valve in the lower chamber of the valve body, automatically actuated through the vertical downward thrust of the neck of the air chamber, when the main valve is seated; a drain valve adapted to be automatically closed by the pressure of the incoming water,

when the combined main valve and air cham- 7 her is raised, due to excess pressure of water against the underside of the diaphragm; and means for automatically opening said valve when the pressure above and below the ,dia-

phragm is equalized; a In testimony whereof, I sign this specification. a

FREDERICK A. SCI-IOSSOVV.

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